/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.camunda.bpm.engine.impl.metrics.parser;

import java.util.function.Function;

import org.camunda.bpm.engine.delegate.DelegateExecution;
import org.camunda.bpm.engine.delegate.ExecutionListener;
import org.camunda.bpm.engine.impl.context.Context;

/**
 * @author Daniel Meyer
 *
 */
public class MetricsExecutionListener implements ExecutionListener {

  protected String metricsName;
  protected Function<DelegateExecution, Boolean> condition;

  public MetricsExecutionListener(String metricsName) {
    this(metricsName, delegateExecution -> true);
  }

  public MetricsExecutionListener(String metricsName,
                                  Function<DelegateExecution, Boolean> condition) {
    this.metricsName = metricsName;
    this.condition = condition;
  }

  public void notify(DelegateExecution execution) throws Exception {
    if (condition.apply(execution)) {
      Context.getProcessEngineConfiguration()
          .getMetricsRegistry()
          .markOccurrence(metricsName);
    }
  }

}
